Post WW2 shell. I think the paint was done outside military use. Cover is the remains of an ERDL pattern. Most common in the 70's and early 80's. Liner looks plastic. if it is, it's not US issue. If it isn't, WW2 if there is a rivet hole in the front, post Korea if it doesn't have the hole.

Fins...

_________________If i'm the stupid one, why do they have a book with pictures of the militaria and I have the real things??